506 STUDIES ON AUSTRALIAN MOLLUSCA, 



not in the Rissoidse, to which Chileutomia was allotted. My 

 oversight of Chileutomia was due to this displacement of the 

 family. Prof. Tate now approves of the affinity to the Eulimidae, 

 and remarks that thus another item is added to the continuance 

 of Eocene types in our recent fauna. 



Couthouyia gracilis, Brazier. 



Vanikoro gracilis, Braz., Proc. Linn. Soc. N.S. Wales (2) ix., 

 1894. p. 169, pi. xiv. fig. 4. 



(Plate xxvi., fig. 13.) 



From the time I drew the figure quoted, I have doubted the 

 generic position assigned to this species, but without being able 

 to improve it. It was noted after the description that the type 

 " is evidently young." Mrs. C. T. Starkey has kindly placed in 

 my hands an adult example of this rare shell, which I now figure. 



The fact that the last whorl is finally free from the body of 

 the shell at once suggests Couthouyia for its reception, and the 

 remaining characters agree satisfactorily with that genus. This 

 specimen, which is from Middle Harbour, Sydney, is 3-8 mm. in 

 length and 2-2 mm. in breadth. 



Judging from the figure and description, the New Zealand 

 Pliocene fossil described by Murdoch* as Lacuna (?) exilis must 

 be closely related to C. gracilis. 



The account of Couthouyia is miserably inadequate. The type 

 species C. decussata has not been figured. Adams published an 

 illustration of the next species, C. reticulata,^ which, however, 

 is inconsistent with a drawing from material authenticated (!) by 

 that author \cf. C. reticulata in Journ. de Conch, xxxii. 1884, 

 pi. ii. fig. 2]. Such negligent work offends all who unhappily 

 must consult it. 



Trans. N.Z. Inst. 1S99, p. 220, pi. xx. f. 

 t P.Z.S. 1853.pl. xx., fig. 13. 



